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How to Hard Reset — Samsung Galaxy M21s
How to Hard Reset — Samsung Galaxy M21s
The Samsung Galaxy M21s is a 2020 Android 10, One UI 2.5 smartphone powered by the Exynos 9611 (10 nm) with 4GB | 6GB and 128GB | 64GB internal storage. It features a 6.4", Super AMOLED, 420 nits (peak), 1080.0x2340.0 display and is available in Blue, Black.
The Galaxy M21s is equipped with a Li-Po 6000 mAh, a 64 MP, 4K@30fps, 1080p@30fps, gyro-EIS main camera, a 32 MP, 1080p@30fps front camera. The device uses a · Nano-SIM · Nano-SIM + Nano-SIM configuration. It weighs 191 g.
Hard resetting your Samsung Galaxy M21s via Recovery Mode will completely wipe all data, apps, accounts and settings, restoring the device to its original factory state. This is commonly used to fix persistent software issues, boot loops, prepare the phone for sale, or recover from a forgotten screen lock. Back up your data before proceeding as this cannot be undone.
All data will be permanently erased. Back up first.
Power off your Samsung Galaxy M21s completely
Press and hold Volume Up + Power for 3+ seconds
Release both when the Samsung logo appears If the buttons alone don't work, connect the phone to a computer with a USB cable first.
Navigate with Volume buttons to 'Wipe data/factory reset'
Press Power to select
Highlight 'Factory reset' and press Power to confirm
Wait 1–3 minutes
Select 'Reboot system now'
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